Coupling for the connecting of lines, powder coating facility including the coupling, and method for cleaning of the powder coating facility

Abstract

A coupling is provided for the connecting of lines and includes a first coupling disc with first line connectors and a second coupling disc with second line connectors. Moreover, a first drive is provided in order to be able to move the two coupling discs axially with respect to each other. Moreover, a second drive is provided in order to be able to rotate the two coupling discs with respect to each other.

The invention claimed is: 
     
       1. A powder coating facility comprising a coupling for connecting of lines,
 wherein a first coupling disc with first line connectors and a second coupling disc with second line connectors is provided, 
 wherein a first drive is provided that is configured to move the first and second coupling discs axially with respect to each other, 
 wherein a second drive is provided that is configured to rotate the first and second coupling discs with respect to each other, 
 wherein a powder conveyor is provided that is connected to one of the first line connectors of the coupling by way of a powder line, 
 wherein a powder applicator is provided that is connected to one of the second line connectors of the coupling by way of a further powder line, 
 wherein a compressed air purging line that is connected to the coupling is provided, 
 wherein the compressed air purging line is connected to one of the second line connectors of the coupling, and 
 wherein a further compressed air purging line that is connected to one of the first line connectors of the coupling is provided. 
 
     
     
       2. The powder coating facility according to  claim 1 
 wherein the first and second coupling discs are arranged such as to be coaxial. 
 
     
     
       3. The powder coating facility according to  claim 1 ,
 wherein the first coupling disc comprises first axial channels, which each are connected to one of the first line connectors each, 
 wherein the second coupling disc comprises second axial channels, which each are connected to one of the second line connectors each, and 
 wherein one seal each is arranged between the first axial channels and the second axial channels. 
 
     
     
       4. The powder coating facility according to  claim 3 
 wherein the seals are designed to be sleeve-shaped. 
 
     
     
       5. The powder coating facility according to  claim 1 ,
 wherein an axle attached to the first coupling disc is provided and forms a rotary axis for the second coupling disc. 
 
     
     
       6. The powder coating facility according to  claim 5 ,
 wherein an axle bearing is provided between the axle and the second coupling disc, and 
 wherein the axle bearing comprises an air purge system. 
 
     
     
       7. The powder coating facility according to  claim 1 ,
 wherein at least a part of the first line connectors are arranged on a first pitch circle. 
 
     
     
       8. The powder coating facility according to  claim 7 ,
 wherein a further part of the first line connectors are arranged on a second pitch circle. 
 
     
     
       9. The powder coating facility according to  claim 1 ,
 wherein the first drive and/or the second drive comprises a pneumatic cylinder. 
 
     
     
       10. The powder coating facility according to  claim 1 ,
 wherein the at least one part of the first and/or of the second line connectors is designed as hose nozzles. 
 
     
     
       11. The powder coating facility according to  claim 1 ,
 wherein the one coupling disc comprises a positioning pin and the other coupling disc comprises sockets for accommodation of the positioning pin. 
 
     
     
       12. The powder coating facility according to  claim 1 ,
 wherein at least one spacer is provided between the first and second coupling discs. 
 
     
     
       13. A method for cleaning of the powder coating facility according to  claim 1 ,
 wherein the first and second coupling discs are arranged appropriately with respect to each other such that the compressed air purging line is connected to the powder line by way of the coupling, 
 wherein the powder line is purged in the direction of the powder conveyor by compressed air. 
 
     
     
       14. The method for cleaning of the powder coating facility according to  claim 13 ,
 wherein the first and second coupling discs are arranged appropriately with respect to each other such that the further compressed air purging line is connected to the powder applicator by way of the coupling and the further powder line, 
 wherein the further powder line is purged in the direction of the powder applicator by compressed air.